[HIVE-3911] udaf_percentile_approx.q fails with Hadoop 0.23.5 when map-side aggr is disabled.

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.10.0
• Assignee: Thiruvel Thirumoolan
• Reporter: Thiruvel Thirumoolan
• Created: 17/Jan/13 14:32
• Updated: 12/Aug/13 07:40

Description

I am running Hive10 unit tests against Hadoop 0.23.5 and udaf_percentile_approx.q fails with a different value when map-side aggr is disabled and only when 3rd argument to this UDAF is 100. Matches expected output when map-side aggr is enabled for the same arguments.

This test passes when hadoop.version is 1.1.1 and fails when its 0.23.x or 2.0.0-alpha or 2.0.2-alpha.

[junit] 20c20
[junit] < 254.08333333333331
[junit] —
[junit] > 252.77777777777777
[junit] 47c47
[junit] < 254.08333333333331
[junit] —
[junit] > 252.77777777777777
[junit] 74c74
[junit] < [23.355555555555558,254.08333333333331,477.0625,489.5466666666667]
[junit] —
[junit] > [24.07,252.77777777777777,476.9444444444444,487.82]
[junit] 101c101
[junit] < [23.355555555555558,254.08333333333331,477.0625,489.5466666666667]
[junit] —
[junit] > [24.07,252.77777777777777,476.9444444444444,487.82]

Issue Links

• is duplicated by: HIVE-4940 udaf_percentile_approx.q is not deterministic